Donald M Crisafulli

US Patent:

7468564, Dec 23, 2008

Filed:

Jan 29, 2007

Appl. No.:

11/699317

Inventors:

Donald M. Crisafulli - Silver Spring MD, US

Assignee:

Wabtec Holding Corp. - Wilmerding PA

International Classification:

F02B 33/34
F02D 29/06

US Classification:

290 52, 290 43, 60608

Abstract:

An electrical power supply system comprises an air-powered alternating current electrical generator in which pressurized air from a single source is used to drive an air turbine secured on the shaft of the alternating current electrical generator. One uncontrolled nozzle continuously directs air from the single source to the air turbine. At least a second controlled nozzle directs air from the single source. A solenoid-controlled shut-off valve is placed in a conduit between the source of compressed air and the second nozzle.

US Patent:

51666103, Nov 24, 1992

Filed:

Aug 2, 1991

Appl. No.:

7/742177

Inventors:

Angel P. Bezos - Rockville MD
Donald M. Crisafulli - Silver Spring MD

Assignee:

Pulse Electronics, Inc. - Rockville MD

International Classification:

G01R 108
G01P 342
G01P 1500
B60Q 154

US Classification:

324160

Abstract:

A solid state speed indicator for railroad locomotives is provided with a plurality of indications in addition to speed. These include an acceleration indicator and an overspeed indicator. In addition, the speed indicator is provided with a dual range speed function having at least one particular use in drag operations. A variation of the solid state speed indicator is a retrofit design that replaces the meter movement in existing speed indicator equipment with a solid state display.